Nolan will discuss the contentious years leading up to the assassination, how the events of that day unfolded, the impact the resulting World War I had on the 20th century, and who was really to blame for the origins of the war, the answer to which is not as clear cut as many might think and has vexed historians for the past century.

The historical society and museum's exhibit, "Over There: Washington and The Great War," will be open for viewing at the museum next door during the lecture.